Comparative Effectiveness of Intravenous Azithromycin Versus Erythromycin Stimulating Antroduodenal Motility in Children.

Background: Azithromycin has been shown to improve gastrointestinal motility in adults and may have fewer drug interactions and reduced arrhythmogenic effects than erythromycin. We hypothesized that azithromycin is comparable to erythromycin in eliciting pharmacodynamic outcomes for antral and small bowel motility.

Objective: To compare the pharmacodynamic effectiveness of azithromycin and erythromycin for eliciting antral and duodenal motility in pediatric patients who underwent antroduodenal manometry for different indications.

Dynamically Navigated versus Freehand Access Cavity Preparation: A Comparative Study on Substance Loss Using Simulated Calcified Canals.

Introduction: The aim of this in vitro study was to compare the speed, qualitative precision, and quantitative loss of tooth structure with freehand and dynamically navigated access preparation techniques for root canal location in 3-dimensional-printed teeth with simulated calcified root canals.

Methods: Forty maxillary and mandibular central incisors (tooth #9 and tooth #25) were 3-dimensionally printed to simulate canal calcification. Under simulated clinical conditions, access preparations were randomly performed with contemporary freehand and dynamically navigated techniques.